The radius of the disk is R, and the mass of the disk is M. Using the parallel axis theorem and theequation for the moment of inertia of a disk about its central axis developed in the previous example, Eq. (8), the moment of inertia of the disk about the specified axis is Fig.
Short Circuits. Short circuits are the second most common reason for breaker tripping and are a more serious concern. Short circuits occur when the black hot wires inside your electrical service panel come in contact with either other hot wires or neutral wires.
Short circuits usually happens when a hot wire touches any of the other two wires in your fuse box. This causes extra current to flow through the circuit, which causes the circuit breaker to trip or the fuse to blow. However, this is not the only reason for short circuits to occur. There are many potential problems in electric circuits, such as faulty wiring, broken insulation, circuit overload, as well as defective plugs, switches, cords, and receptacles.